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Author Topic: Arnie's CNC router build (just getting started)  (Read 4525 times)
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zarzul
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« on: June 04, 2007, 02:59:56 PM »
Well after cnc'ing my mini lathe and then my mini-mill it is now time to get going on something a little larger. 

I am just getting started on a cnc router.  I have one question right from the git-go.  My frame has a lot of twist-ability in it. I can lift one
corner about 1" before the other legs start to move.

I was planning on stiffening it up by welding strut criss-cross between the channel and the unistrut just below it, and probably diagonally
corner to corner on the channels, flush to the bottom of the channel.  Then strut every 12" parallel to the shortest side flush with the top of the channels.

Any other ideas on stiffening this up more?

I am sure I will have more questions as I go.  My rails are drilled and tapped 1 1/2 bars 4' long.  I got some matching linear bearings and poured some aluminum castings that I am almost done machining on my mach 3 enabled mini-lathe.

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Brian Barker
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« Reply #1 on: June 05, 2007, 08:56:30 AM »
Looking good Smiley

Thanks for the pic
Brian
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Chaoticone
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« Reply #2 on: June 05, 2007, 09:21:10 AM »
Hey Arnie,
    I looked at this the other day right after you posted it and replied but I see it didn't make it.  Sad

Keep the pics coming. I hope to build a gantry router before too long and like seeing others designs. Looking good.

Brett
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zarzul
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« Reply #3 on: July 02, 2007, 02:44:45 PM »
I got a little more done this weekend, 

Welded cross supports - this stiffened up the table real well.
Welded table top supports
Installed rails
Finished machining bearing castings
Mounted bearings & gantry risers

I am trying to keep the weight down on the gantry components by using mostly aluminum.

Arnie

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zarzul
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« Reply #4 on: October 03, 2008, 02:13:34 PM »
Finished up to the point I can do some cutting. 

I have a few unusual characteristics, note the y Axis drive system close-up. 
I haven't had time to do any linearity tests but it seems to run real nice.  I can do 400ipm on the
y with no loss steps.

The x has a lot of power but the ballscrew has a little bend in it and it starts wobbling real
bad at anything over 200ipm.  I think I will probably put a larger screw on it.

 

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zarzul
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« Reply #5 on: October 03, 2008, 02:19:02 PM »
some more pic's

note the cable system to prevent racking

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57phillip
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« Reply #6 on: November 20, 2008, 09:10:24 PM »
Wow! What a Machine I am trying to get my Vanguard 7000 working correctly to do engraving on homemade watch dials that is my retirement hobby repairing watches and putting together special watches for special people. Does anyone here think Arnie's machine will engrave on a 1" circle of gold.
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I'm not too old to learn, am I?
DennisCNC
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« Reply #7 on: November 20, 2008, 09:22:40 PM »
His machine sure will but if you only need a small work area, then a mini mill will be best for you.  Maybe refitted with some new ballscrews and will have a fairly accurate machine for that type of work.


Dennis
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57phillip
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« Reply #8 on: November 20, 2008, 09:36:12 PM »
Yes a have the machine I need and it is almost working right, I was kidding about Arnie's machine I never saw such a big engraver.  All of this is new to me, I was a autobody shop owner in the working life. Have fun.
Phil
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I'm not too old to learn, am I?
RICH
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« Reply #9 on: November 21, 2008, 06:48:55 PM »
ZARZUL,
Must be nice to have space. So what's the first project?
RICH
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